Paper take-up mechanism



H. F. SADGEBURY 1,953,869

PAPER TAKE-UP MECHANISM April 3,- 1934.

Filed Dec. 30, 1930 2 Sheets-Sheet 1 [N VENTOR A TTORNEY April 3, 1934.

H. SADGEBURY PAPER TAKE-UP MECHANISM Filed Dec. 2 Sheets-Sheet 2 Patented Apr. 3, 1934 PAPER TAKE-UP MECHANISM Herman F. Sadgebury, Dayton, Ohio, assignor to Ohmer Fare Register Company, Dayton, Ohio Application December 30, 1930, Serial No. 505,560

Claims.

- This invention relates to a paper take-up mechanism and constitutes an improvement on the paper take-up mechanism shown in the patent to A. S. Wheelbarger, 1,688,444, patented October 23, 1928 and provides .a means whereby a supply roll of paper may be easily inserted in a machine or removed therefrom and means whereby after the paper roll has made a predetermined number of revolutions an increased tension will be applied to the paper.

In the drawings:

Figure 1 represents a side elevational view of the machine with the casing removed.

Figure 2 represents a side elevational view of the tension means for the paper.

Figure 3 represents a cross-sectional View thereof.

Figure 4 represents a front elevational view of a paper supply roll which has my invention incorporated in connection therewith.

An operating handle 1 is secured to a shaft 2 which has rigidly mounted thereon a gear 3 which meshes with and drives a gear 4 mounted on a shaft 5. The gear 4 drives 2. Geneva pinion 6 which drives a pinion "I mounted on a shaft 8 to which is secured a feed roller 9. A feed roller 10 is mounted on a shaft 11 and a strip of ticket paper 12 passes between the feed rollers 9 and 10, which ticket paper is fed from a supply roll 13.

The gear 4 is attached to a disk 14 which carries a wrist pin 15 connected to a pitmanlfi which at its other end is connected to a wrist pin 17 mounted on an oscillating platen carrier 18 pivoted on a shaft 19. The platen carrier 18 is provided with shafts 20 and 21 on which are mounted platens 22 and 23 respectively.

An L-shaped lever 24 is pivoted on a pin 25 and at its lower end engages the left hand end of the pitman 16 as shown in Figure 1 and also a pawl carrier 26 pivoted on a shaft 27. The pawl carrier 26 is provided with a double nosed pawl 28 mounted on a pin 29. A spring 30 tends to rotate the pawl carrier 26 clockwise so as to hold the same in engagement with the lever 24. When the pitman 16 moves to the left as shown in Figure 1 the lever 24 and pawl carrier 26 correspondingly move and the pawl engages the ratchet 31 secured to the shaft 27 and rotates the said shaft counter-clockwise as viewed in Figure 1. On the shaft 27 is mounted a receiving roll of paper 32 which receives the record strip 33 which is unwound from a record supply roll 34.

The roll 34 is loosely mounted on a shaft 35 and is frictionally held between the disks 36. Only one of these disks is shown in Figure 1 but it will,

of course, be understood that at the other end of the shaft 35 there is a duplicate disk. Spring arms 37 press against the disk 36 so as to push the said disk against the paper. These spring arms are mounted on the shaft 35 and abut against a disk 38 provided with a pin 39. The disk 38 is secured to the shaft 35 and a disk 40 is likewise secured thereto, which disk 40 is provided with a pin 41. An arm 42 is internally screw threaded and receives the shaft 35 provided with external screw threads, which arm 42 is provided with a lower finger 43 and an upper bifurcated portion 44 which receives a stationary pin 45 carried by the framework 46 of the machine. As the paper 33 is pulled from the supply roll one of the arms 3'7 engages the pin 39 rotating the disk 38 and shaft 35 and thereby screwing the arm 42 inwardly, which movement will continue until the finger 43 has been moved in sufficiently to engage the pin 41. The arm 42 cannot rotate for it is held against rotation by the pin 45 and when the finger 43 engages the pin 41 the disks 40 and 38 are thereby locked against further rotation and the pin 39 locks the spring arms 37 against further rotation so that thereafter the paper will have to be unwound against the tension of the disk 36. It, therefore, appears that this paper is permitted to unwind for a predetermined amount and an increased tension is thereupon placed on the same.

The supply roll 13 is mounted on spring arms 47 and 4'? which are provided with cups 48 and 48' respectively which form portions of spherical surfaces which are received in the core of the paper. Each of these spring arms is secured to arms 49 and 49 respectively. The arm 49' (Figure 4) is secured to the side wall 46 of the machine while the arm 49 is rotatably mounted on a shaft 50. The arm 49 is provided with a pin 51 which is smaller than the hole 52 provided in the arm 49 so that it can slide therein. This pin is secured to an arm 53 secured to an internally screw threaded hub 54 which receives the external screw threads 55 of the shaft 50. A spring 56 is secured to the arm 53 and to a stationary plate 57 carried by the frame 46. The plate 57 is provided with a stationary pin 58.

When the paper strip 12 is unwound from the roller 13 the friction of the paper roll on the cup 48 causes the spring arm 47 and arms 49 and 53 to rotate therewith. This movement winds up the spring 56 and the screw threads cause the arm 53 to move outwardly towards the frame 46 until the finger 59 of the arm 53 engages the pin 58 which stops all of such rotation so that the paper thereafter will have to overcome the friction between the cup 48 and the paper roll in order for it to be unwound further.

Such construction is exceedingly advantageous when inserting a new roll of paper for all that the operator must do is to press the paper against the spring arms 4'? and 4'? and cups 48 and 48 which will yield so that the paper can be inserted. When the paper is fully inserted the cups 48 and 48 will snap into the core and thereby hold the paper in position. If, however, it is necessary to remove the paper supply roll, this can be accomplished by the operator overcoming the tension exerted by the spring arms 47, 4'7.

I realize that many changes may be made in the specific form of the invention as shown herein and I, therefore, desire to claim the invention broadly except as I may limit myself in the appended claims.

I claim:

1. In a tensioning device, a cup adapted to engage the core of a roll of paper, a spring arm supporting said cup and adapted to press said cup against said roll of paper, means whereby resistance is ofiered to the rotation of said cup for a predetermined number of revolutions, and means to lock said cup against rotation after said given number of revolutions.

2. In a tensioning device, a cup, a resilient arm carrying said cup, means whereby resistance is offered to the rotation of said arm for a predetermined number of revolutions, and. means to lock said arm against rotation after said given number of revolutions.

3. In a tensioning device, a cup adapted to engage the core of a roll of paper, a resilient arm on which said cup is mounted, means whereby resistance is offered to the rotation of said arm and cup for a predetermined number of revolutions, and means to lock said arm and cup against rotation after said given number of revolutions.

4. In a tensioning device, a cup adapted to engage the core of a roll of paper, a spring arm on which said cup is mounted, a second arm on which said spring arm is mounted, a third arm, a pin connecting said second and third arms, and means whereby all of said arms and cupare locked against rotation after a predetermined number of revolutions.

5. In a tensioning device, a cup adapted to engage the core of a roll of paper, a spring arm on which said cup is mounted, a shaft, supporting means for said arm pivoted on said shaft so that the center of said shaft if projected would form a right angle with a tangent of said cup, and means whereby said cup is locked against rotation after a predetermined number of revolutions.

HERMAN F. SADGEBURY. 

